/*
 * Copyright 2024 LinQingYing. and contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * The use of this source code is governed by the Apache License 2.0,
 * which allows users to freely use, modify, and distribute the code,
 * provided they adhere to the terms of the license.
 *
 * The software is provided "as-is", and the authors are not responsible for
 * any damages or issues arising from its use.
 *
 */

package com.linqingying.cangjie.ide.hierarchy

import com.intellij.ide.hierarchy.HierarchyBrowserManager
import com.intellij.ide.util.treeView.AlphaComparator
import com.intellij.ide.util.treeView.NodeDescriptor
import com.intellij.openapi.project.Project

object CangJieHierarchyUtil {

    val NODE_DESCRIPTOR_COMPARATOR: java.util.Comparator<NodeDescriptor<*>> =
        java.util.Comparator.comparingInt { obj: NodeDescriptor<*> -> obj.index }

    fun getComparator(project: Project): Comparator<NodeDescriptor<*>> {
        return if (HierarchyBrowserManager.getInstance(project).state!!.SORT_ALPHABETICALLY) {
            AlphaComparator.INSTANCE
        } else {
           NODE_DESCRIPTOR_COMPARATOR
        }
    }

}
